Guide to Commodity Codes: How to Find the Right HS Code for Your Product

Finding the Right Commodity Code for Your Product

Every product that crosses an international border must be assigned a commodity code — a numerical classification that determines how much duty you pay, what regulations apply, and whether any licences or certificates are required. Getting this code right is one of the most important steps in international trade, yet it is an area where many businesses struggle.

What Are Commodity Codes?

Commodity codes, also known as tariff codes or HS codes, are based on the Harmonised System (HS) — an international standard developed by the World Customs Organization (WCO). The HS uses a six-digit structure that is consistent worldwide. Individual countries and customs territories then add additional digits for more specific classification.

In the UK, commodity codes typically contain ten digits for imports (eight for exports). According to GOV.UK, the UK Trade Tariff contains over 15,000 commodity codes, and selecting the correct one requires careful analysis of your product’s characteristics.

Why Correct Classification Matters

The commodity code attached to your goods affects virtually every aspect of customs clearance:

• Duty rates: Different codes attract different duty percentages — a single digit difference can mean thousands of pounds in additional costs
• VAT treatment: Some products qualify for reduced or zero VAT rates based on their classification
• Trade agreement eligibility: Preferential rates under free trade agreements are product-specific
• Regulatory requirements: Certain codes trigger requirements for licences, certificates, or inspections
• Trade statistics: Governments use commodity codes to track trade flows and develop economic policy

How to Determine Your Commodity Code: A Practical Guide

Step 1: Understand Your Product

Before consulting any tariff database, you need a precise understanding of your product. Key factors include: what is the product made of? What is it used for? How is it manufactured? What is its essential character if it contains multiple materials?

Step 2: Use the UK Trade Tariff Tool

GOV.UK provides a free online Trade Tariff tool where you can search by keyword or browse through sections and chapters. Start with the broadest description and narrow down through the headings and subheadings. The tool shows duty rates, regulatory requirements, and any applicable preferences for each code.

Step 3: Apply the General Interpretive Rules (GIRs)

The HS includes six General Interpretive Rules that govern how products should be classified. These rules address situations such as:

• Products that could fall under multiple headings
• Composite goods made of different materials
• Sets of goods put up for retail sale
• Parts and accessories of machinery or equipment

The GIRs must be applied sequentially — Rule 1 takes priority, then Rule 2, and so on. Understanding these rules is essential for defensible classification.

Step 4: Check Section and Chapter Notes

Each section and chapter of the tariff includes legal notes that define scope, exclusions, and specific classification rules. These notes are legally binding and often determine where a product is classified. Never skip this step — the notes frequently override what might seem like the obvious classification.

Step 5: Consider a BTI Application

For products you import regularly or where classification is genuinely ambiguous, applying for a Binding Tariff Information ruling from HMRC provides legal certainty for three years.

Common Classification Challenges

Some product categories are notoriously difficult to classify:

• Composite products: Items made from multiple materials require determining which material gives the product its essential character
• Technology products: Electronics and software often straddle multiple tariff headings
• Food products: Prepared foods, ingredients, and food supplements each have complex classification rules
• Textiles: Classification depends on fibre content, construction method, and end use

Get Expert Classification Support

Tariff classification is both a science and an art. At Agencja Celna UK, our classification specialists analyse your products using the full range of classification tools and their extensive experience. Whether you need a one-off classification or a comprehensive review of your entire product range, EasyClearance provides the expertise to ensure you are trading under the correct codes.